Calibration method and apparatus for a mobile device
First Claim
1. Method in a mobile device (20), in whichpressure data is measured,the pressure data is used as atmospheric-pressure data and/or for the definition of altitude, andthe magnetic field of the Earth is measured by a magnetic sensor (22), characterized in thatconsecutive measurements are performed using the magnetic sensor (22) and the consecutive measurement results are compared, and on the basis of the comparison the mobile device (20) is commanded to either atmospheric-pressure measurement or altitude measurement.
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Abstract
The invention relates to a method and a mobile device. In accordance with the method—pressure data is measured, the pressure data is used as atmospheric-pressure data and/or for the definition of altitude, and the magnetic field of the Earth is measured by a magnetic sensor (22). In accordance with the invention consecutive measurements are performed using the magnetic sensor (22) and the consecutive measurement results are compared, and on the basis of the comparison the mobile device (20) is commanded to either atmospheric-pressure measurement or altitude measurement.
35 Citations
20 Claims
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1. Method in a mobile device (20), in which
pressure data is measured, the pressure data is used as atmospheric-pressure data and/or for the definition of altitude, and the magnetic field of the Earth is measured by a magnetic sensor (22), characterized in that consecutive measurements are performed using the magnetic sensor (22) and the consecutive measurement results are compared, and on the basis of the comparison the mobile device (20) is commanded to either atmospheric-pressure measurement or altitude measurement.
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8. Mobile device (20), which comprises
means (23) for measuring pressure, means (21) for using the pressure data as atmospheric-pressure data and/or as altitude-level data, and measuring means (22) for measuring the magnetic field of the Earth, characterized in that the mobile device comprises means (22, 21) for performing consecutive measurements using the means for measuring the magnetic field of the Earth and means (21, 24) for comparing the consecutive measurement results and, on the basis of the comparison, for commanding the mobile device (20) to either atmospheric-pressure measurement or altitude measurement.
Specification